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Journal of Combustion
Volume 2012 (2012), Article ID 138619, 8 pages
http://dx.doi.org/10.1155/2012/138619
Research Article

Modified Quasi-Steady Fuel Droplet Combustion Model

Department of Mechanical Engineering, University of Uyo, PMB 1017, Uyo, Akwa Ibom, Nigeria

Received 19 December 2011; Accepted 10 March 2012

Academic Editor: Evangelos G. Giakoumis

Copyright © 2012 Etim S. Udoetok. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The quasi-steady model of the combustion of a fuel droplet has been modified. The approach involved the modification of the quasi-steady model to reflect the difference in constant properties across the flame front. New methods for accurately estimating gas constants and for estimating Lewis number are presented. The proposed theoretical model provides results that correlate favorably with published experimental results. The proposed theoretical model also eliminates the need for unguided adjustment of thermal constants or the complex analysis of the variation of thermal properties with temperature and can serve as a basis for analysis of other combustion conditions like droplets cloud and convective and high-pressure conditions.